How difficult are Uncharted/Last of Us platinums?

With The Lost Legacy coming out next week, I wanted to go through and platinum each game once I've finished TLL.

In 1/2/3, I have about 20-25% earned according to PSNProfiles, and in 4/TLoU I have only around 9% each, and that's including Left Behind. I think I played each on easy, so crushing doesn't sound too fun.

Is it worth going for at all?